User`s guide

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Cisco Router and Security Device Manager Version 2.2 User’s Guide
OL-4015-08
Chapter 18 Network Address Translation
Network Address Translation Wizards
• Any comments entered about the network
To remove a network from the NAT configuration, clear its checkbox.
To add a network not directly connected to your router to the list, click Add
Networks.
Note If SDM does not allow you to place a checkmark next to a network for which you
want to configure a NAT rule, the interface associated with the network has
already been designated as a NAT interface. This status will be indicated by the
word Designated in the Comments column. If you want to configure a NAT rule
for that interface, exit the wizard, click the Edit NAT tab, click Designate NAT
Interfaces, and uncheck the interface. Then return to the wizard and configure the
NAT rule.
Add Network
You can add a network to the list of networks made available in the Advanced
NAT wizard. You must have the network’s IP address and network mask. For more
information, refer to IP Addresses and Subnet Masks.
IP Address
Enter the network’s IP address.
Subnet Mask
Enter the network’s subnet mask in this field, or select the number of subnet bits
from the scrolling field on the right. The subnet mask tells the router which bits
of the IP address designate the network address and which bits designate the host
address.
Advanced NAT Wizard: Server Public IP Addresses
This window allows you to translate public IP addresses to the private IP
addresses of internal servers which you want to make accessible from the Internet.
The list shows the private IP addresses and ports (if used) and the public IP
addresses and ports (if used) to which they are translated.